Heat exchanger



T. E. MURRAY HET EXCHANGER Filed June 13.71925 lll Y 511 bcn foi .l THON/H5 .EMM/ifm, @t @0A @IHM/11mg @im um iair.

Patented ug. 4, 1925.

rra n. srar THOMAS E. MURRAY, 0F BROOKLYN, NEW YORK.

HEAT EXCHANGEE.

Application tiled, .Tune 13, 1923. Serientitel 645,617.

To all whom t may concern:

Be 1t known that I, THOMAS E. MURRAY, a citizen oi the United States, and resident A'of the city of Brooklyn, county ot' Kings,

and State of New York, have invented certain new and usetui improvements in Heat Exchangers, of which the following is a specification.

This invention relates to means whereby the hot gases passing through one iiue can give up their heatV to a conductor which can be moved into the path of a stream ot air passing,r through an adjacent Hue. k

An embodiment of the invention is illustrated in the accompanying drawings in which Fig. 1 is a plan view showing an air conduit in horizontal section and waste gas conduit surrounding theysa'me;

Fig. 2 is a longitudinal section on line 2-2 of Fig. l; l

Fig. 3 is a transverse section on line 3 3 of Fig. 1; y

Fig. 4 is a perspective view with parts broken away showing a modified construction.

Referring first to Fig. 1, 10 is a vertical conduit through which air to be heated is passed. A waste gas conduit surrounds the air conduit and means are provided whereby the hoteases flowing through said waste ras conduit can give up their heat to conductors which are adapted to be subsequently moved into the path oi the air flowing in the conduit 10 so as to heat such The inlet end 12 of the waste gas conduit connects with branch portions 14 and 16 located on opposite sides of the air conduit. The waste gases pass, as indicated by the ar-.

rows m, from the inlet end of the conduit 12 through theI branches 14 and 16 to the outlet end 15%- oi the conduit.

Located within the conduit 10 are a number ot plates-20, 20a. 20h, 20, each having secured. thereto a multiplicity ot outwardly attendingr rods whose portions 22 are adapted at certain times to be moved into the branch 14 and withdrawn to the interior oi the conduit 10. and whose portions 24 are similarly arranged to be alternately moved from the interior of the conduit 10 to the interior of the branch 16. rods are secured to the plates 20, 20a, 20", 2()c and lit loosely in suitable apertures formed in the side walls of tbe conduit- 10k so that they can be readilylreciprooated.

The plates 2O and 20a. have secured thereto outwardly extending rack bars 2 6 and,

26a each formed with teeth-28 for e .gagement with the teeth on a. drive gear carried on a shaft 32.

, The plates 2Gb and 2Oc are similarly provided with 'rack bars 26b and 26 arranged to be reciprocated by a gear 84 carried by a shaft 36. i i

'The shafts 82 and 36 are driven by any suitable reversing mechanism, such as a reversing electric Vvinotor, so as to turn the gears first in one direction and then in the opposite direction. The result of this movement will be, for example, that the dit) "portions 22 of the rod carried by plate 2O will be moved from the interior of the con` duit 10 to thelinterior of the branch 14, and the portions 22 of the rod carried by the plate 20wvill be withdrawn from the brancn14 to the interior of the conduit l0.

When the portions 22 of the rods are in,

the path ot the hot gases, the opposite pon tions 24 are in the path of the air passing through the conduit 10.

It is apparent that the portions of the rods within the branches 14 and 16 are heated by the gases iiowing therethrough and that when the plates. 20, 2O, 20b and 20Gv are moved the rods are correspondingly moved' so as to give up their heat to the -air yflowing in the conduit 10.

In Fig. 4, l' have shown a slightly meditied arrangement where in place of the racks 26,26% 26", 266,21 have provided rods i 38, 38e, 38h, 38 for reciprocating the plates 20, 20, 20h, 20c. The rods 38 and 38 are connected by a pin and slot connection with a. rocking lever 40 carried by a shaft 42. Similarly rods 38h and 38C are connected to a rocking lever 44 carried by a shaft 46. The shafts 42 and 46 willl be rocked back and forth by any suitable mechanism so as to alternately move the rods into the stream of hot gases and into the stream of air so as to heat the latter. 'f

In the drawings, l have shown a multiplicity ot" rods carried by the plates 20' to 20c, the rods being arranged in banks, one bank staggered with respect to the other. The rods may be otherwise arranged and in some cases in ace ot, the solid rods shown I may substitute plates, hollow rods or conducting members of various other shapes.

While I have described with great particnlarity of detail the embodiments ofthe' invention herein shown, it is not to vbe construed that I am limited thereto, as changes 1n arrangement; and substitution of equivalents lnay be inadehy those skilled in thel art without departing` frein thtl in ventiou as defined in the appended claims.

' What, l claim is:

l. A heat exchanger including a pair of juxtaposed conduits and n plurality of heat conducting` members extending laterally across one of said conduits and arranged to he reciprocated to extend acrossthe other.

2. A heat exchanger including a conduit for het gases, a conduit ttor air, a set ot rods arranged to be-positioned first in one oo nduit and later in the other so as to be heated by the gases flowing in one conduit and to give up their heatto the air flowing in the other conduit.

said conduit 'for the passage of hot gases, a A

plurality ot members arranged so that they can be alternately nioved into the conduit and into the casing and Vice-versa.

4, A heat exchanger including a p'air of juxtaposed conduits, a plurality ot heat conducting members and nieans for reciprocating the latter so that they alternately occupy a position in each conduit.

In Witness whereof, I have hereunto signed my naine.

THOMAS E. MURRAY. 

